drivers/gpu/drm/nouveau/nouveau_gem.c

   1 /*
   2  * Copyright (C) 2008 Ben Skeggs.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include "nouveau_drm.h"
  28 #include "nouveau_dma.h"
  29 #include "nouveau_fence.h"
  30 #include "nouveau_abi16.h"
  31
  32 #include "nouveau_ttm.h"
  33 #include "nouveau_gem.h"
  34
  35 void
  36 nouveau_gem_object_del(struct drm_gem_object *gem)
  37 {
  38         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  39         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
  40         struct ttm_buffer_object *bo = &nvbo->bo;
  41         struct device *dev = drm->dev->dev;
  42         int ret;
  43
  44         ret = pm_runtime_get_sync(dev);
  45         if (WARN_ON(ret < 0 && ret != -EACCES)) {
  46                 pm_runtime_put_autosuspend(dev);
  47                 return;
  48         }
  49
  50         if (gem->import_attach)
  51                 drm_prime_gem_destroy(gem, nvbo->bo.sg);
  52
  53         drm_gem_object_release(gem);
  54
  55         /* reset filp so nouveau_bo_del_ttm() can test for it */
  56         gem->filp = NULL;
  57         ttm_bo_unref(&bo);
  58
  59         pm_runtime_mark_last_busy(dev);
  60         pm_runtime_put_autosuspend(dev);
  61 }
  62
  63 int
  64 nouveau_gem_object_open(struct drm_gem_object *gem, struct drm_file *file_priv)
  65 {
  66         struct nouveau_cli *cli = nouveau_cli(file_priv);
  67         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
  68         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
  69         struct nvkm_vma *vma;
  70         struct device *dev = drm->dev->dev;
  71         int ret;
  72
  73         if (!cli->vm)
  74                 return 0;
  75
  76         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, NULL);
  77         if (ret)
  78                 return ret;
  79
  80         vma = nouveau_bo_vma_find(nvbo, cli->vm);
  81         if (!vma) {
  82                 vma = kzalloc(sizeof(*vma), GFP_KERNEL);
  83                 if (!vma) {
  84                         ret = -ENOMEM;
  85                         goto out;
  86                 }
  87
  88                 ret = pm_runtime_get_sync(dev);
  89                 if (ret < 0 && ret != -EACCES) {
  90                         kfree(vma);
  91                         goto out;
  92                 }
  93
  94                 ret = nouveau_bo_vma_add(nvbo, cli->vm, vma);
  95                 if (ret)
  96                         kfree(vma);
  97
  98                 pm_runtime_mark_last_busy(dev);
  99                 pm_runtime_put_autosuspend(dev);
 100         } else {
 101                 vma->refcount++;
 102         }
 103
 104 out:
 105         ttm_bo_unreserve(&nvbo->bo);
 106         return ret;
 107 }
 108
 109 static void
 110 nouveau_gem_object_delete(void *data)
 111 {
 112         struct nvkm_vma *vma = data;
 113         nvkm_vm_unmap(vma);
 114         nvkm_vm_put(vma);
 115         kfree(vma);
 116 }
 117
 118 static void
 119 nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nvkm_vma *vma)
 120 {
 121         const bool mapped = nvbo->bo.mem.mem_type != TTM_PL_SYSTEM;
 122         struct reservation_object *resv = nvbo->bo.resv;
 123         struct reservation_object_list *fobj;
 124         struct fence *fence = NULL;
 125
 126         fobj = reservation_object_get_list(resv);
 127
 128         list_del(&vma->head);
 129
 130         if (fobj && fobj->shared_count > 1)
 131                 ttm_bo_wait(&nvbo->bo, true, false, false);
 132         else if (fobj && fobj->shared_count == 1)
 133                 fence = rcu_dereference_protected(fobj->shared[0],
 134                                                 reservation_object_held(resv));
 135         else
 136                 fence = reservation_object_get_excl(nvbo->bo.resv);
 137
 138         if (fence && mapped) {
 139                 nouveau_fence_work(fence, nouveau_gem_object_delete, vma);
 140         } else {
 141                 if (mapped)
 142                         nvkm_vm_unmap(vma);
 143                 nvkm_vm_put(vma);
 144                 kfree(vma);
 145         }
 146 }
 147
 148 void
 149 nouveau_gem_object_close(struct drm_gem_object *gem, struct drm_file *file_priv)
 150 {
 151         struct nouveau_cli *cli = nouveau_cli(file_priv);
 152         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 153         struct nouveau_drm *drm = nouveau_bdev(nvbo->bo.bdev);
 154         struct device *dev = drm->dev->dev;
 155         struct nvkm_vma *vma;
 156         int ret;
 157
 158         if (!cli->vm)
 159                 return;
 160
 161         ret = ttm_bo_reserve(&nvbo->bo, false, false, false, NULL);
 162         if (ret)
 163                 return;
 164
 165         vma = nouveau_bo_vma_find(nvbo, cli->vm);
 166         if (vma) {
 167                 if (--vma->refcount == 0) {
 168                         ret = pm_runtime_get_sync(dev);
 169                         if (!WARN_ON(ret < 0 && ret != -EACCES)) {
 170                                 nouveau_gem_object_unmap(nvbo, vma);
 171                                 pm_runtime_mark_last_busy(dev);
 172                                 pm_runtime_put_autosuspend(dev);
 173                         }
 174                 }
 175         }
 176         ttm_bo_unreserve(&nvbo->bo);
 177 }
 178
 179 int
 180 nouveau_gem_new(struct drm_device *dev, int size, int align, uint32_t domain,
 181                 uint32_t tile_mode, uint32_t tile_flags,
 182                 struct nouveau_bo **pnvbo)
 183 {
 184         struct nouveau_drm *drm = nouveau_drm(dev);
 185         struct nouveau_bo *nvbo;
 186         u32 flags = 0;
 187         int ret;
 188
 189         if (domain & NOUVEAU_GEM_DOMAIN_VRAM)
 190                 flags |= TTM_PL_FLAG_VRAM;
 191         if (domain & NOUVEAU_GEM_DOMAIN_GART)
 192                 flags |= TTM_PL_FLAG_TT;
 193         if (!flags || domain & NOUVEAU_GEM_DOMAIN_CPU)
 194                 flags |= TTM_PL_FLAG_SYSTEM;
 195
 196         if (domain & NOUVEAU_GEM_DOMAIN_COHERENT)
 197                 flags |= TTM_PL_FLAG_UNCACHED;
 198
 199         ret = nouveau_bo_new(dev, size, align, flags, tile_mode,
 200                              tile_flags, NULL, NULL, pnvbo);
 201         if (ret)
 202                 return ret;
 203         nvbo = *pnvbo;
 204
 205         /* we restrict allowed domains on nv50+ to only the types
 206          * that were requested at creation time.  not possibly on
 207          * earlier chips without busting the ABI.
 208          */
 209         nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_VRAM |
 210                               NOUVEAU_GEM_DOMAIN_GART;
 211         if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 212                 nvbo->valid_domains &= domain;
 213
 214         /* Initialize the embedded gem-object. We return a single gem-reference
 215          * to the caller, instead of a normal nouveau_bo ttm reference. */
 216         ret = drm_gem_object_init(dev, &nvbo->gem, nvbo->bo.mem.size);
 217         if (ret) {
 218                 nouveau_bo_ref(NULL, pnvbo);
 219                 return -ENOMEM;
 220         }
 221
 222         nvbo->bo.persistent_swap_storage = nvbo->gem.filp;
 223         return 0;
 224 }
 225
 226 static int
 227 nouveau_gem_info(struct drm_file *file_priv, struct drm_gem_object *gem,
 228                  struct drm_nouveau_gem_info *rep)
 229 {
 230         struct nouveau_cli *cli = nouveau_cli(file_priv);
 231         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 232         struct nvkm_vma *vma;
 233
 234         if (is_power_of_2(nvbo->valid_domains))
 235                 rep->domain = nvbo->valid_domains;
 236         else if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 237                 rep->domain = NOUVEAU_GEM_DOMAIN_GART;
 238         else
 239                 rep->domain = NOUVEAU_GEM_DOMAIN_VRAM;
 240         rep->offset = nvbo->bo.offset;
 241         if (cli->vm) {
 242                 vma = nouveau_bo_vma_find(nvbo, cli->vm);
 243                 if (!vma)
 244                         return -EINVAL;
 245
 246                 rep->offset = vma->offset;
 247         }
 248
 249         rep->size = nvbo->bo.mem.num_pages << PAGE_SHIFT;
 250         rep->map_handle = drm_vma_node_offset_addr(&nvbo->bo.vma_node);
 251         rep->tile_mode = nvbo->tile_mode;
 252         rep->tile_flags = nvbo->tile_flags;
 253         return 0;
 254 }
 255
 256 int
 257 nouveau_gem_ioctl_new(struct drm_device *dev, void *data,
 258                       struct drm_file *file_priv)
 259 {
 260         struct nouveau_drm *drm = nouveau_drm(dev);
 261         struct nouveau_cli *cli = nouveau_cli(file_priv);
 262         struct nvkm_fb *fb = nvxx_fb(&drm->device);
 263         struct drm_nouveau_gem_new *req = data;
 264         struct nouveau_bo *nvbo = NULL;
 265         int ret = 0;
 266
 267         if (!nvkm_fb_memtype_valid(fb, req->info.tile_flags)) {
 268                 NV_PRINTK(err, cli, "bad page flags: 0x%08x\n", req->info.tile_flags);
 269                 return -EINVAL;
 270         }
 271
 272         ret = nouveau_gem_new(dev, req->info.size, req->align,
 273                               req->info.domain, req->info.tile_mode,
 274                               req->info.tile_flags, &nvbo);
 275         if (ret)
 276                 return ret;
 277
 278         ret = drm_gem_handle_create(file_priv, &nvbo->gem, &req->info.handle);
 279         if (ret == 0) {
 280                 ret = nouveau_gem_info(file_priv, &nvbo->gem, &req->info);
 281                 if (ret)
 282                         drm_gem_handle_delete(file_priv, req->info.handle);
 283         }
 284
 285         /* drop reference from allocate - handle holds it now */
 286         drm_gem_object_unreference_unlocked(&nvbo->gem);
 287         return ret;
 288 }
 289
 290 static int
 291 nouveau_gem_set_domain(struct drm_gem_object *gem, uint32_t read_domains,
 292                        uint32_t write_domains, uint32_t valid_domains)
 293 {
 294         struct nouveau_bo *nvbo = nouveau_gem_object(gem);
 295         struct ttm_buffer_object *bo = &nvbo->bo;
 296         uint32_t domains = valid_domains & nvbo->valid_domains &
 297                 (write_domains ? write_domains : read_domains);
 298         uint32_t pref_flags = 0, valid_flags = 0;
 299
 300         if (!domains)
 301                 return -EINVAL;
 302
 303         if (valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 304                 valid_flags |= TTM_PL_FLAG_VRAM;
 305
 306         if (valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 307                 valid_flags |= TTM_PL_FLAG_TT;
 308
 309         if ((domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 310             bo->mem.mem_type == TTM_PL_VRAM)
 311                 pref_flags |= TTM_PL_FLAG_VRAM;
 312
 313         else if ((domains & NOUVEAU_GEM_DOMAIN_GART) &&
 314                  bo->mem.mem_type == TTM_PL_TT)
 315                 pref_flags |= TTM_PL_FLAG_TT;
 316
 317         else if (domains & NOUVEAU_GEM_DOMAIN_VRAM)
 318                 pref_flags |= TTM_PL_FLAG_VRAM;
 319
 320         else
 321                 pref_flags |= TTM_PL_FLAG_TT;
 322
 323         nouveau_bo_placement_set(nvbo, pref_flags, valid_flags);
 324
 325         return 0;
 326 }
 327
 328 struct validate_op {
 329         struct list_head list;
 330         struct ww_acquire_ctx ticket;
 331 };
 332
 333 static void
 334 validate_fini_no_ticket(struct validate_op *op, struct nouveau_fence *fence,
 335                         struct drm_nouveau_gem_pushbuf_bo *pbbo)
 336 {
 337         struct nouveau_bo *nvbo;
 338         struct drm_nouveau_gem_pushbuf_bo *b;
 339
 340         while (!list_empty(&op->list)) {
 341                 nvbo = list_entry(op->list.next, struct nouveau_bo, entry);
 342                 b = &pbbo[nvbo->pbbo_index];
 343
 344                 if (likely(fence))
 345                         nouveau_bo_fence(nvbo, fence, !!b->write_domains);
 346
 347                 if (unlikely(nvbo->validate_mapped)) {
 348                         ttm_bo_kunmap(&nvbo->kmap);
 349                         nvbo->validate_mapped = false;
 350                 }
 351
 352                 list_del(&nvbo->entry);
 353                 nvbo->reserved_by = NULL;
 354                 ttm_bo_unreserve_ticket(&nvbo->bo, &op->ticket);
 355                 drm_gem_object_unreference_unlocked(&nvbo->gem);
 356         }
 357 }
 358
 359 static void
 360 validate_fini(struct validate_op *op, struct nouveau_fence *fence,
 361               struct drm_nouveau_gem_pushbuf_bo *pbbo)
 362 {
 363         validate_fini_no_ticket(op, fence, pbbo);
 364         ww_acquire_fini(&op->ticket);
 365 }
 366
 367 static int
 368 validate_init(struct nouveau_channel *chan, struct drm_file *file_priv,
 369               struct drm_nouveau_gem_pushbuf_bo *pbbo,
 370               int nr_buffers, struct validate_op *op)
 371 {
 372         struct nouveau_cli *cli = nouveau_cli(file_priv);
 373         struct drm_device *dev = chan->drm->dev;
 374         int trycnt = 0;
 375         int ret = -EINVAL, i;
 376         struct nouveau_bo *res_bo = NULL;
 377         LIST_HEAD(gart_list);
 378         LIST_HEAD(vram_list);
 379         LIST_HEAD(both_list);
 380
 381         ww_acquire_init(&op->ticket, &reservation_ww_class);
 382 retry:
 383         if (++trycnt > 100000) {
 384                 NV_PRINTK(err, cli, "%s failed and gave up.\n", __func__);
 385                 return -EINVAL;
 386         }
 387
 388         for (i = 0; i < nr_buffers; i++) {
 389                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[i];
 390                 struct drm_gem_object *gem;
 391                 struct nouveau_bo *nvbo;
 392
 393                 gem = drm_gem_object_lookup(dev, file_priv, b->handle);
 394                 if (!gem) {
 395                         NV_PRINTK(err, cli, "Unknown handle 0x%08x\n", b->handle);
 396                         ret = -ENOENT;
 397                         break;
 398                 }
 399                 nvbo = nouveau_gem_object(gem);
 400                 if (nvbo == res_bo) {
 401                         res_bo = NULL;
 402                         drm_gem_object_unreference_unlocked(gem);
 403                         continue;
 404                 }
 405
 406                 if (nvbo->reserved_by && nvbo->reserved_by == file_priv) {
 407                         NV_PRINTK(err, cli, "multiple instances of buffer %d on "
 408                                       "validation list\n", b->handle);
 409                         drm_gem_object_unreference_unlocked(gem);
 410                         ret = -EINVAL;
 411                         break;
 412                 }
 413
 414                 ret = ttm_bo_reserve(&nvbo->bo, true, false, true, &op->ticket);
 415                 if (ret) {
 416                         list_splice_tail_init(&vram_list, &op->list);
 417                         list_splice_tail_init(&gart_list, &op->list);
 418                         list_splice_tail_init(&both_list, &op->list);
 419                         validate_fini_no_ticket(op, NULL, NULL);
 420                         if (unlikely(ret == -EDEADLK)) {
 421                                 ret = ttm_bo_reserve_slowpath(&nvbo->bo, true,
 422                                                               &op->ticket);
 423                                 if (!ret)
 424                                         res_bo = nvbo;
 425                         }
 426                         if (unlikely(ret)) {
 427                                 if (ret != -ERESTARTSYS)
 428                                         NV_PRINTK(err, cli, "fail reserve\n");
 429                                 break;
 430                         }
 431                 }
 432
 433                 b->user_priv = (uint64_t)(unsigned long)nvbo;
 434                 nvbo->reserved_by = file_priv;
 435                 nvbo->pbbo_index = i;
 436                 if ((b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM) &&
 437                     (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART))
 438                         list_add_tail(&nvbo->entry, &both_list);
 439                 else
 440                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_VRAM)
 441                         list_add_tail(&nvbo->entry, &vram_list);
 442                 else
 443                 if (b->valid_domains & NOUVEAU_GEM_DOMAIN_GART)
 444                         list_add_tail(&nvbo->entry, &gart_list);
 445                 else {
 446                         NV_PRINTK(err, cli, "invalid valid domains: 0x%08x\n",
 447                                  b->valid_domains);
 448                         list_add_tail(&nvbo->entry, &both_list);
 449                         ret = -EINVAL;
 450                         break;
 451                 }
 452                 if (nvbo == res_bo)
 453                         goto retry;
 454         }
 455
 456         ww_acquire_done(&op->ticket);
 457         list_splice_tail(&vram_list, &op->list);
 458         list_splice_tail(&gart_list, &op->list);
 459         list_splice_tail(&both_list, &op->list);
 460         if (ret)
 461                 validate_fini(op, NULL, NULL);
 462         return ret;
 463
 464 }
 465
 466 static int
 467 validate_list(struct nouveau_channel *chan, struct nouveau_cli *cli,
 468               struct list_head *list, struct drm_nouveau_gem_pushbuf_bo *pbbo,
 469               uint64_t user_pbbo_ptr)
 470 {
 471         struct nouveau_drm *drm = chan->drm;
 472         struct drm_nouveau_gem_pushbuf_bo __user *upbbo =
 473                                 (void __force __user *)(uintptr_t)user_pbbo_ptr;
 474         struct nouveau_bo *nvbo;
 475         int ret, relocs = 0;
 476
 477         list_for_each_entry(nvbo, list, entry) {
 478                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
 479
 480                 ret = nouveau_gem_set_domain(&nvbo->gem, b->read_domains,
 481                                              b->write_domains,
 482                                              b->valid_domains);
 483                 if (unlikely(ret)) {
 484                         NV_PRINTK(err, cli, "fail set_domain\n");
 485                         return ret;
 486                 }
 487
 488                 ret = nouveau_bo_validate(nvbo, true, false);
 489                 if (unlikely(ret)) {
 490                         if (ret != -ERESTARTSYS)
 491                                 NV_PRINTK(err, cli, "fail ttm_validate\n");
 492                         return ret;
 493                 }
 494
 495                 ret = nouveau_fence_sync(nvbo, chan, !!b->write_domains, true);
 496                 if (unlikely(ret)) {
 497                         if (ret != -ERESTARTSYS)
 498                                 NV_PRINTK(err, cli, "fail post-validate sync\n");
 499                         return ret;
 500                 }
 501
 502                 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 503                         if (nvbo->bo.offset == b->presumed.offset &&
 504                             ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
 505                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
 506                              (nvbo->bo.mem.mem_type == TTM_PL_TT &&
 507                               b->presumed.domain & NOUVEAU_GEM_DOMAIN_GART)))
 508                                 continue;
 509
 510                         if (nvbo->bo.mem.mem_type == TTM_PL_TT)
 511                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_GART;
 512                         else
 513                                 b->presumed.domain = NOUVEAU_GEM_DOMAIN_VRAM;
 514                         b->presumed.offset = nvbo->bo.offset;
 515                         b->presumed.valid = 0;
 516                         relocs++;
 517
 518                         if (copy_to_user(&upbbo[nvbo->pbbo_index].presumed,
 519                                              &b->presumed, sizeof(b->presumed)))
 520                                 return -EFAULT;
 521                 }
 522         }
 523
 524         return relocs;
 525 }
 526
 527 static int
 528 nouveau_gem_pushbuf_validate(struct nouveau_channel *chan,
 529                              struct drm_file *file_priv,
 530                              struct drm_nouveau_gem_pushbuf_bo *pbbo,
 531                              uint64_t user_buffers, int nr_buffers,
 532                              struct validate_op *op, int *apply_relocs)
 533 {
 534         struct nouveau_cli *cli = nouveau_cli(file_priv);
 535         int ret;
 536
 537         INIT_LIST_HEAD(&op->list);
 538
 539         if (nr_buffers == 0)
 540                 return 0;
 541
 542         ret = validate_init(chan, file_priv, pbbo, nr_buffers, op);
 543         if (unlikely(ret)) {
 544                 if (ret != -ERESTARTSYS)
 545                         NV_PRINTK(err, cli, "validate_init\n");
 546                 return ret;
 547         }
 548
 549         ret = validate_list(chan, cli, &op->list, pbbo, user_buffers);
 550         if (unlikely(ret < 0)) {
 551                 if (ret != -ERESTARTSYS)
 552                         NV_PRINTK(err, cli, "validating bo list\n");
 553                 validate_fini(op, NULL, NULL);
 554                 return ret;
 555         }
 556         *apply_relocs = ret;
 557         return 0;
 558 }
 559
 560 static inline void
 561 u_free(void *addr)
 562 {
 563         kvfree(addr);
 564 }
 565
 566 static inline void *
 567 u_memcpya(uint64_t user, unsigned nmemb, unsigned size)
 568 {
 569         void *mem;
 570         void __user *userptr = (void __force __user *)(uintptr_t)user;
 571
 572         size *= nmemb;
 573
 574         mem = kmalloc(size, GFP_KERNEL | __GFP_NOWARN);
 575         if (!mem)
 576                 mem = vmalloc(size);
 577         if (!mem)
 578                 return ERR_PTR(-ENOMEM);
 579
 580         if (copy_from_user(mem, userptr, size)) {
 581                 u_free(mem);
 582                 return ERR_PTR(-EFAULT);
 583         }
 584
 585         return mem;
 586 }
 587
 588 static int
 589 nouveau_gem_pushbuf_reloc_apply(struct nouveau_cli *cli,
 590                                 struct drm_nouveau_gem_pushbuf *req,
 591                                 struct drm_nouveau_gem_pushbuf_bo *bo)
 592 {
 593         struct drm_nouveau_gem_pushbuf_reloc *reloc = NULL;
 594         int ret = 0;
 595         unsigned i;
 596
 597         reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 598         if (IS_ERR(reloc))
 599                 return PTR_ERR(reloc);
 600
 601         for (i = 0; i < req->nr_relocs; i++) {
 602                 struct drm_nouveau_gem_pushbuf_reloc *r = &reloc[i];
 603                 struct drm_nouveau_gem_pushbuf_bo *b;
 604                 struct nouveau_bo *nvbo;
 605                 uint32_t data;
 606
 607                 if (unlikely(r->bo_index >= req->nr_buffers)) {
 608                         NV_PRINTK(err, cli, "reloc bo index invalid\n");
 609                         ret = -EINVAL;
 610                         break;
 611                 }
 612
 613                 b = &bo[r->bo_index];
 614                 if (b->presumed.valid)
 615                         continue;
 616
 617                 if (unlikely(r->reloc_bo_index >= req->nr_buffers)) {
 618                         NV_PRINTK(err, cli, "reloc container bo index invalid\n");
 619                         ret = -EINVAL;
 620                         break;
 621                 }
 622                 nvbo = (void *)(unsigned long)bo[r->reloc_bo_index].user_priv;
 623
 624                 if (unlikely(r->reloc_bo_offset + 4 >
 625                              nvbo->bo.mem.num_pages << PAGE_SHIFT)) {
 626                         NV_PRINTK(err, cli, "reloc outside of bo\n");
 627                         ret = -EINVAL;
 628                         break;
 629                 }
 630
 631                 if (!nvbo->kmap.virtual) {
 632                         ret = ttm_bo_kmap(&nvbo->bo, 0, nvbo->bo.mem.num_pages,
 633                                           &nvbo->kmap);
 634                         if (ret) {
 635                                 NV_PRINTK(err, cli, "failed kmap for reloc\n");
 636                                 break;
 637                         }
 638                         nvbo->validate_mapped = true;
 639                 }
 640
 641                 if (r->flags & NOUVEAU_GEM_RELOC_LOW)
 642                         data = b->presumed.offset + r->data;
 643                 else
 644                 if (r->flags & NOUVEAU_GEM_RELOC_HIGH)
 645                         data = (b->presumed.offset + r->data) >> 32;
 646                 else
 647                         data = r->data;
 648
 649                 if (r->flags & NOUVEAU_GEM_RELOC_OR) {
 650                         if (b->presumed.domain == NOUVEAU_GEM_DOMAIN_GART)
 651                                 data |= r->tor;
 652                         else
 653                                 data |= r->vor;
 654                 }
 655
 656                 ret = ttm_bo_wait(&nvbo->bo, true, false, false);
 657                 if (ret) {
 658                         NV_PRINTK(err, cli, "reloc wait_idle failed: %d\n", ret);
 659                         break;
 660                 }
 661
 662                 nouveau_bo_wr32(nvbo, r->reloc_bo_offset >> 2, data);
 663         }
 664
 665         u_free(reloc);
 666         return ret;
 667 }
 668
 669 int
 670 nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 671                           struct drm_file *file_priv)
 672 {
 673         struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv);
 674         struct nouveau_cli *cli = nouveau_cli(file_priv);
 675         struct nouveau_abi16_chan *temp;
 676         struct nouveau_drm *drm = nouveau_drm(dev);
 677         struct drm_nouveau_gem_pushbuf *req = data;
 678         struct drm_nouveau_gem_pushbuf_push *push;
 679         struct drm_nouveau_gem_pushbuf_bo *bo;
 680         struct nouveau_channel *chan = NULL;
 681         struct validate_op op;
 682         struct nouveau_fence *fence = NULL;
 683         int i, j, ret = 0, do_reloc = 0;
 684
 685         if (unlikely(!abi16))
 686                 return -ENOMEM;
 687
 688         list_for_each_entry(temp, &abi16->channels, head) {
 689                 if (temp->chan->chid == req->channel) {
 690                         chan = temp->chan;
 691                         break;
 692                 }
 693         }
 694
 695         if (!chan)
 696                 return nouveau_abi16_put(abi16, -ENOENT);
 697
 698         req->vram_available = drm->gem.vram_available;
 699         req->gart_available = drm->gem.gart_available;
 700         if (unlikely(req->nr_push == 0))
 701                 goto out_next;
 702
 703         if (unlikely(req->nr_push > NOUVEAU_GEM_MAX_PUSH)) {
 704                 NV_PRINTK(err, cli, "pushbuf push count exceeds limit: %d max %d\n",
 705                          req->nr_push, NOUVEAU_GEM_MAX_PUSH);
 706                 return nouveau_abi16_put(abi16, -EINVAL);
 707         }
 708
 709         if (unlikely(req->nr_buffers > NOUVEAU_GEM_MAX_BUFFERS)) {
 710                 NV_PRINTK(err, cli, "pushbuf bo count exceeds limit: %d max %d\n",
 711                          req->nr_buffers, NOUVEAU_GEM_MAX_BUFFERS);
 712                 return nouveau_abi16_put(abi16, -EINVAL);
 713         }
 714
 715         if (unlikely(req->nr_relocs > NOUVEAU_GEM_MAX_RELOCS)) {
 716                 NV_PRINTK(err, cli, "pushbuf reloc count exceeds limit: %d max %d\n",
 717                          req->nr_relocs, NOUVEAU_GEM_MAX_RELOCS);
 718                 return nouveau_abi16_put(abi16, -EINVAL);
 719         }
 720
 721         push = u_memcpya(req->push, req->nr_push, sizeof(*push));
 722         if (IS_ERR(push))
 723                 return nouveau_abi16_put(abi16, PTR_ERR(push));
 724
 725         bo = u_memcpya(req->buffers, req->nr_buffers, sizeof(*bo));
 726         if (IS_ERR(bo)) {
 727                 u_free(push);
 728                 return nouveau_abi16_put(abi16, PTR_ERR(bo));
 729         }
 730
 731         /* Ensure all push buffers are on validate list */
 732         for (i = 0; i < req->nr_push; i++) {
 733                 if (push[i].bo_index >= req->nr_buffers) {
 734                         NV_PRINTK(err, cli, "push %d buffer not in list\n", i);
 735                         ret = -EINVAL;
 736                         goto out_prevalid;
 737                 }
 738         }
 739
 740         /* Validate buffer list */
 741         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
 742                                            req->nr_buffers, &op, &do_reloc);
 743         if (ret) {
 744                 if (ret != -ERESTARTSYS)
 745                         NV_PRINTK(err, cli, "validate: %d\n", ret);
 746                 goto out_prevalid;
 747         }
 748
 749         /* Apply any relocations that are required */
 750         if (do_reloc) {
 751                 ret = nouveau_gem_pushbuf_reloc_apply(cli, req, bo);
 752                 if (ret) {
 753                         NV_PRINTK(err, cli, "reloc apply: %d\n", ret);
 754                         goto out;
 755                 }
 756         }
 757
 758         if (chan->dma.ib_max) {
 759                 ret = nouveau_dma_wait(chan, req->nr_push + 1, 16);
 760                 if (ret) {
 761                         NV_PRINTK(err, cli, "nv50cal_space: %d\n", ret);
 762                         goto out;
 763                 }
 764
 765                 for (i = 0; i < req->nr_push; i++) {
 766                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 767                                 bo[push[i].bo_index].user_priv;
 768
 769                         nv50_dma_push(chan, nvbo, push[i].offset,
 770                                       push[i].length);
 771                 }
 772         } else
 773         if (drm->device.info.chipset >= 0x25) {
 774                 ret = RING_SPACE(chan, req->nr_push * 2);
 775                 if (ret) {
 776                         NV_PRINTK(err, cli, "cal_space: %d\n", ret);
 777                         goto out;
 778                 }
 779
 780                 for (i = 0; i < req->nr_push; i++) {
 781                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 782                                 bo[push[i].bo_index].user_priv;
 783
 784                         OUT_RING(chan, (nvbo->bo.offset + push[i].offset) | 2);
 785                         OUT_RING(chan, 0);
 786                 }
 787         } else {
 788                 ret = RING_SPACE(chan, req->nr_push * (2 + NOUVEAU_DMA_SKIPS));
 789                 if (ret) {
 790                         NV_PRINTK(err, cli, "jmp_space: %d\n", ret);
 791                         goto out;
 792                 }
 793
 794                 for (i = 0; i < req->nr_push; i++) {
 795                         struct nouveau_bo *nvbo = (void *)(unsigned long)
 796                                 bo[push[i].bo_index].user_priv;
 797                         uint32_t cmd;
 798
 799                         cmd = chan->push.vma.offset + ((chan->dma.cur + 2) << 2);
 800                         cmd |= 0x20000000;
 801                         if (unlikely(cmd != req->suffix0)) {
 802                                 if (!nvbo->kmap.virtual) {
 803                                         ret = ttm_bo_kmap(&nvbo->bo, 0,
 804                                                           nvbo->bo.mem.
 805                                                           num_pages,
 806                                                           &nvbo->kmap);
 807                                         if (ret) {
 808                                                 WIND_RING(chan);
 809                                                 goto out;
 810                                         }
 811                                         nvbo->validate_mapped = true;
 812                                 }
 813
 814                                 nouveau_bo_wr32(nvbo, (push[i].offset +
 815                                                 push[i].length - 8) / 4, cmd);
 816                         }
 817
 818                         OUT_RING(chan, 0x20000000 |
 819                                       (nvbo->bo.offset + push[i].offset));
 820                         OUT_RING(chan, 0);
 821                         for (j = 0; j < NOUVEAU_DMA_SKIPS; j++)
 822                                 OUT_RING(chan, 0);
 823                 }
 824         }
 825
 826         ret = nouveau_fence_new(chan, false, &fence);
 827         if (ret) {
 828                 NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret);
 829                 WIND_RING(chan);
 830                 goto out;
 831         }
 832
 833 out:
 834         validate_fini(&op, fence, bo);
 835         nouveau_fence_unref(&fence);
 836
 837 out_prevalid:
 838         u_free(bo);
 839         u_free(push);
 840
 841 out_next:
 842         if (chan->dma.ib_max) {
 843                 req->suffix0 = 0x00000000;
 844                 req->suffix1 = 0x00000000;
 845         } else
 846         if (drm->device.info.chipset >= 0x25) {
 847                 req->suffix0 = 0x00020000;
 848                 req->suffix1 = 0x00000000;
 849         } else {
 850                 req->suffix0 = 0x20000000 |
 851                               (chan->push.vma.offset + ((chan->dma.cur + 2) << 2));
 852                 req->suffix1 = 0x00000000;
 853         }
 854
 855         return nouveau_abi16_put(abi16, ret);
 856 }
 857
 858 int
 859 nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data,
 860                            struct drm_file *file_priv)
 861 {
 862         struct drm_nouveau_gem_cpu_prep *req = data;
 863         struct drm_gem_object *gem;
 864         struct nouveau_bo *nvbo;
 865         bool no_wait = !!(req->flags & NOUVEAU_GEM_CPU_PREP_NOWAIT);
 866         bool write = !!(req->flags & NOUVEAU_GEM_CPU_PREP_WRITE);
 867         int ret;
 868
 869         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 870         if (!gem)
 871                 return -ENOENT;
 872         nvbo = nouveau_gem_object(gem);
 873
 874         if (no_wait)
 875                 ret = reservation_object_test_signaled_rcu(nvbo->bo.resv, write) ? 0 : -EBUSY;
 876         else {
 877                 long lret;
 878
 879                 lret = reservation_object_wait_timeout_rcu(nvbo->bo.resv, write, true, 30 * HZ);
 880                 if (!lret)
 881                         ret = -EBUSY;
 882                 else if (lret > 0)
 883                         ret = 0;
 884                 else
 885                         ret = lret;
 886         }
 887         nouveau_bo_sync_for_cpu(nvbo);
 888         drm_gem_object_unreference_unlocked(gem);
 889
 890         return ret;
 891 }
 892
 893 int
 894 nouveau_gem_ioctl_cpu_fini(struct drm_device *dev, void *data,
 895                            struct drm_file *file_priv)
 896 {
 897         struct drm_nouveau_gem_cpu_fini *req = data;
 898         struct drm_gem_object *gem;
 899         struct nouveau_bo *nvbo;
 900
 901         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 902         if (!gem)
 903                 return -ENOENT;
 904         nvbo = nouveau_gem_object(gem);
 905
 906         nouveau_bo_sync_for_device(nvbo);
 907         drm_gem_object_unreference_unlocked(gem);
 908         return 0;
 909 }
 910
 911 int
 912 nouveau_gem_ioctl_info(struct drm_device *dev, void *data,
 913                        struct drm_file *file_priv)
 914 {
 915         struct drm_nouveau_gem_info *req = data;
 916         struct drm_gem_object *gem;
 917         int ret;
 918
 919         gem = drm_gem_object_lookup(dev, file_priv, req->handle);
 920         if (!gem)
 921                 return -ENOENT;
 922
 923         ret = nouveau_gem_info(file_priv, gem, req);
 924         drm_gem_object_unreference_unlocked(gem);
 925         return ret;
 926 }
 927